Benj Edwards on Twitter: "Epson RC-20 (1985), first true smartwatch; could run standalone apps loaded from ROM and display them on its LCD http://t.co/6yNO3WupcX" / Twitter
The origin of 'wearable computer' was in Japan in the 1980's - GIGAZINE
Before smartwatches broke mainstream: list of vintage wrist computers | CyberNews
T-Rex game on Epson RC-20 (1984) - YouTube
EPSON RC-20 腕コン seiko uc-2000 デジボーグ ジウジアーロ(セイコー)｜売買されたオークション情報、ヤフオク! の商品情報をアーカイブ公開 - オークファン（aucfan.com）
A history of the smart watch and why nobody wants one | by Simon Dingle | Medium
Seiko RC-1000 data manager | World of SAM
Rewind the 80's-90's — Epson RC-20 (1984)
The History of the Smartwatch Goes Back Much Further Than You'd Think
F】 Introducing: The Seiko Presage Style60's GMT
Vintage Seiko Spacetronic Muslim Watch W030-0010 Digital Watch | eBay
Epson RC-20 (1984) | レトロな広告, レトロなスタイル, 昔の広告
ASCII.jp：最初のスマートウォッチ EPSON RC-20！
ASCII.jp：最初のスマートウォッチ EPSON RC-20！
Seiko Computer Watch Fun | Vintage Electronics Have Soul – The Pocket Calculator Show Website
NEW RARE NOS Vintage 1983 Seiko RC-1000 Computer Terminal LCD Digital watch | eBay
VintageDigitalWatches - Ep 18 - Epson RC-20 - YouTube
REQUEST CASIO RC-4000 watch face - Round Custom Faces - Full Android Watch
Seiko RC Family Review - Ep 64 - Vintage Digital Watches - YouTube
Nerd Watch – Page 2 – Vintage Electronics Have Soul – The Pocket Calculator Show Website | Digital watch, Electric watch, Fashion watches
Seiko WristMac: rarissimo lontano antenato dell'Apple Watch all'asta - HDblog.it
Vintage Seiko S501-4000 Wrist Terminal RC-1000 Computer Digital Men's Watch. | eBay
Seiko RC-1000 Wrist Terminal Complete Set | eBay
Seiko Computer Watch Fun | Vintage Electronics Have Soul – The Pocket Calculator Show Website
Seiko RC-4500 Data Bank Wrist Mac Watch WristMac Retro Vintage Computer | WatchCharts
